Sandvik Coromant 7859041 Turning Insert CCMT32.52-WM 4415

Product Description

The SANDVIK COROMANT 7859041 is a CCMT-style indexable turning insert in the CoroTurn 107 series, designed for external and internal turning operations on CNC lathes. Built from solid carbide and coated via CVD with a TiCN, Al2O3, and TiN multilayer system, this insert delivers wear resistance and thermal stability across a range of cutting conditions. It features an 80-degree diamond insert shape, a 9.53 mm (0.3750 inches) inscribed circle diameter, a 0.79 mm (0.0313 inches) corner radius, and a WM chip breaker geometry. The neutral hand orientation suits standard right-hand and left-hand toolholders. Licensed machinists and CNC operators install this insert in compatible CCMT toolholders for precision turning.

This insert is rated primarily for steel workpiece materials (ISO code P) and secondarily for cast iron (ISO code K), covering a broad range of production turning scenarios. The WM chip breaker is suited for medium finishing to light roughing passes where chip control and surface finish are both priorities. The Manufacturer Grade 4415 paired with CVD coating provides a durable cutting edge for moderate cutting speeds and feed rates. With two cutting edges per insert and a clamp-and-screw holding method, it is a practical choice for production shops and job shops running high-volume turned parts.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for enhanced wear and heat resistance
• WM chip breaker geometry for effective chip control in medium finishing to light roughing
• 80-degree diamond insert shape (CCMT) for versatile external and internal turning
• Neutral hand orientation compatible with standard CCMT toolholders
• Two usable cutting edges per insert for extended tool economy
• Clamp and screw holding method for secure seating under cutting loads

Compatibility

Designed for use in CCMT-style toolholders compatible with the CoroTurn 107 series. ISO code CCMT 09 T3 08-WM 4415. Manufacturers catalog number CCMT 3(2.5)2-WM 4415. Intended for toolholders accepting a 9.53 mm inscribed circle insert with clamp and screw retention.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the pocket locating surfaces before tightening the clamping screw to avoid chatter or premature edge failure. Inspect the insert pocket and shim seat for wear or debris before installing a new edge.